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$422+ Cheap flights from Porto (OPO) to Las Vegas (LAS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/16. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — LAS
Apr 29 — May 61
Wed 4/29
Wed 5/6
1 adult, Economy
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Cheap flight deals from Porto to Las Vegas

Cheapest flights from Porto to Las Vegas
Explore the most affordable flight options available from Porto to Las Vegas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 30, 2026.

This Gotogate deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/181:30 pm
OPO
-
LAS
1 stop30h 12m
Air Transat
Wed 6/312:45 pm
LAS
-
OPO
1 stop15h 00m
Air Transat
Deal found 3/29$840
This KLM deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/205:00 am
OPO
-
LAS
1 stop21h 35m
KLM
Sat 5/305:50 pm
LAS
-
OPO
1 stop20h 10m
KLM
Deal found 3/28$899
This KLM deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/47:00 pm
OPO
-
LAS
1 stop31h 35m
KLM
Wed 5/135:50 pm
LAS
-
OPO
1 stop20h 10m
KLM
Deal found 3/29$901
This Delta deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/45:00 am
OPO
-
LAS
2 stops18h 27m
Delta
Wed 5/135:50 pm
LAS
-
OPO
1 stop20h 10m
Delta
Deal found 3/27$906

Find flight deals from Porto to Las Vegas

Discover tips and strategies to find the most affordable flight options for your journey from Porto (OPO) to Las Vegas (LAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 30, 2026.

Most accurate provider

Trip.com
1 star

Most trusted provider

Trip.com
3 stars

Round-trip from

$840
(Gotogate)

One-way from

$422
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$1,058
Provider with most accurate pricing for Porto-Las Vegas Harry Reid Intl flight deals.
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Provider most trusted by Cheapflights users for Porto-Las Vegas Harry Reid Intl flights.
Search Deals
From Porto to Las Vegas Harry Reid Intl
Search Deals
One-way flight from Porto to Las Vegas Harry Reid Intl
Search Deals
Highest demand for flights based on searches. 0% potential increase in price ($6 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Porto to Las Vegas that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 30, 2026.
Use the filters below to find and compare flights from Porto to Las Vegas that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortoLas Vegas

OPO - LAS

OPOLAS

Porto

Mon 5/18

1:30 pm-11:42 am

1 stop30h 12m

Las Vegas Harry Reid Intl

Wed 6/3

12:45 pm-11:45 am

1 stop15h 00m

$840

PortoLas Vegas

OPO - LAS

OPOLAS

Porto

Wed 5/20

5:00 am-6:35 pm

1 stop21h 35m

Las Vegas Harry Reid Intl

Sat 5/30

5:50 pm-10:00 pm

1 stop20h 10m

$904

PortoLas Vegas

OPO - LAS

OPOLAS

Porto

Mon 5/18

5:00 am-6:53 pm

2 stops21h 53m

Las Vegas Harry Reid Intl

Wed 6/3

5:50 pm-10:00 pm

1 stop20h 10m

$909

PortoLas Vegas

OPO - LAS

OPOLAS

Porto

Mon 5/4

5:00 am-6:28 pm

2 stops21h 28m

Las Vegas Harry Reid Intl

Wed 5/13

9:30 am-10:40 am

2 stops17h 10m

$937
Quickest round-trip

PortoLas Vegas

OPO - LAS

OPOLAS

Porto

Wed 5/20

5:00 am-4:00 pm

2 stops19h 00m

Las Vegas Harry Reid Intl

Sat 5/30

10:22 am-10:20 am

2 stops15h 58m

$941

PortoLas Vegas

OPO - LAS

OPOLAS

Porto

Sun 9/20

5:00 am-7:12 pm

2 stops22h 12m

Las Vegas Harry Reid Intl

Sat 9/26

9:25 am-10:20 am

1 stop16h 55m

$965
Cheapest one-way

PortoLas Vegas

OPO - LAS

OPOLAS

Porto

Tue 6/16

1:30 pm-5:15 pm

3 stops35h 45m

$433

PortoLas Vegas

OPO - LAS

OPOLAS

Porto

Tue 8/25

9:05 pm-9:35 pm

3 stops32h 30m

$435
Quickest one-way

PortoLas Vegas

OPO - LAS

OPOLAS

Porto

Tue 8/25

8:55 pm-8:00 pm

1 stop31h 05m

$822

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/29

Sorted by cheapest first
  • Most accurate provider: When it comes to deals on Porto-Las Vegas flights, users find the pricing of Trip.com to be most consistent on Cheapflights vs. Trip.com Users can find the same prices on Porto-Las Vegas flight deals on Cheapflights vs. Trip.com <90% of the time. Price accuracy is based on data collected from Porto-Las Vegas flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Porto-Las Vegas flights, Cheapflights users trust Trip.com the most. Trip.com has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Porto-Las Vegas flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Porto to Las Vegas

Have a flexible travel schedule? Discover the best time to fly to Las Vegas from Porto with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Porto to Las Vegas

How much does it cost to fly round-trip from Porto to Las Vegas?

Related info for your journey

Find useful and relevant information for your journey from Porto to Las Vegas. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Porto to Las Vegas?

    Airlines like Air Transat, KLM, and Delta fly from Porto to Las Vegas in about 21h 35m. The time it takes to get you to your destination can typically vary by up to 8h 37m. There are 5352 mi between Porto and Las Vegas. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Porto to Las Vegas that include hotel bookings?

    Yes. In addition to deals on Porto to Las Vegas flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Porto to Las Vegas?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Porto to Las Vegas.

  • Can I find deals for business class flights from Porto to Las Vegas?

    Yes. Cheapflights offers flight deals from Porto to Las Vegas by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Las Vegas?

Book flights to Las Vegas if you plan to visit one of these locations
Paradise
Mesquite
Henderson
North Las Vegas
Kingman
Winchester
Boulder City
Needles
Sunrise Manor

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